a = int(input())

if 400<=a and a<=599:
    print('8')
elif 600<=a and a<=799:
    print('7')
elif 800<=a and a<=999:
    print('6')
elif 1000<=a and a<=1199:
    print('5')
elif 1200<=a and a<=1399:
    print('4')
elif 1400<=a and a<=1599:
    print('3')
elif 1600<=a and a<=1799:
    print('2')
elif 1800<=a and a<=1999:
    print('1') a = int(input()) a int(input()) int input() input if 400<=a and a<=599:
    print('8')
elif 600<=a and a<=799:
    print('7')
elif 800<=a and a<=999:
    print('6')
elif 1000<=a and a<=1199:
    print('5')
elif 1200<=a and a<=1399:
    print('4')
elif 1400<=a and a<=1599:
    print('3')
elif 1600<=a and a<=1799:
    print('2')
elif 1800<=a and a<=1999:
    print('1') 400<=a and a<=599 400<=a 400 a a<=599 a 599 print('8') print '8' elif 600<=a and a<=799:
    print('7') 600<=a and a<=799 600<=a 600 a a<=799 a 799 print('7') print '7' elif 800<=a and a<=999:
    print('6') 800<=a and a<=999 800<=a 800 a a<=999 a 999 print('6') print '6' elif 1000<=a and a<=1199:
    print('5') 1000<=a and a<=1199 1000<=a 1000 a a<=1199 a 1199 print('5') print '5' elif 1200<=a and a<=1399:
    print('4') 1200<=a and a<=1399 1200<=a 1200 a a<=1399 a 1399 print('4') print '4' elif 1400<=a and a<=1599:
    print('3') 1400<=a and a<=1599 1400<=a 1400 a a<=1599 a 1599 print('3') print '3' elif 1600<=a and a<=1799:
    print('2') 1600<=a and a<=1799 1600<=a 1600 a a<=1799 a 1799 print('2') print '2' elif 1800<=a and a<=1999:
    print('1') 1800<=a and a<=1999 1800<=a 1800 a a<=1999 a 1999 print('1') print '1' a = int(input()) int(input()) a
a = int(input())

if 400<=a and a<=599:
    print('8')
elif 600<=a and a<=799:
    print('7')
elif 800<=a and a<=999:
    print('6')
elif 1000<=a and a<=1199:
    print('5')
elif 1200<=a and a<=1399:
    print('4')
elif 1400<=a and a<=1599:
    print('3')
elif 1600<=a and a<=1799:
    print('2')
elif 1800<=a and a<=1999:
    print('1')